Universal joint



March 15, 1927.

E. GR UENFELDT UNIVERSAL JOINT Filed Nov. 28. 1925 r l I l l 1 EM/L GRUENFELDT INVENTOR Patented Mar. 15, 1927.

UnivERsAL ome Amman memos eater as, 1925. Serial No.- 71,956.

' This iiive'ntion 'rlates'to universfal joints; and more particularly to joints of thecharactr wherein the trunnio son the end cou- 51mg members are connected with an inter: mediate hollow -1uhrieant-'conta1n1 g ring through jturnatbearings mount d radially irrsalid riiig'. I

It :is the general rpos'e 'a'nd objectof this invention to rovide a'j'ointof the. genera-1 character referred" to whereinth lubricant containing ring is made of two sem siennanane suitably connected each part being provided vvith' a seat for a' bushing providing a bearingfor omen-i? th two trunifidns'of the driving memberand" a seat for a bushing providing a bearing for one of the two trunnionsror the driven member.

A furthernbject of .thjefinventi'on isto provide a construction" which will enable the joint tob assembled qu1clly=and conveniently; and a"'s'till furtherobject "ofthe -1nvention 'is to provide a joint capable of realiz in'g all of the foregoing objectsin' -a con;- struction which is'economical "of prod ucti'orr.

The foregoing other features of m invention will now be de's'c'ri'bedin" connectioiiwith the acconepanying drawings" formiiig' fp'airt' 'o'fthis specification in whichI have representediiiy universal jointinits pre- -'fer'retl rcrmanerPdhic-h I shall pomt'out more particularly the claims those featiii' s which" 1 believe to be new and of :my own invention.

g the drawings: ,1 t

igure 1' is a loiigitud-l'nal section of my universal joint. 7

Figure 2 is a section along the line 2-2 Figure 1 with the coupling members removed.

Figure 3 is a projected side View of the lubricant containing ring shown in Flgure 2.

Figure 4 is a plan of the spacer employed.

Figure 5 is a section along the line 55 Figure 4:.

Figures 6 and 7 are views similar to those shown in Figures 2 and 3 respectively, but of a modification employed.

In the carrying out of my invention I employ a driving member 10 and a driven member 20 each provided with two trunnions or journals adapted to be received by bushings 30 mounted in' seats 31 provided in connecting ring 32.

I have illustrated the driven member 20 as being provided with two integral trunni'ons c2 l' while'the driving member 10 is provided with projection 'l'l adapted 'to opcrate between the bases of the "trunnions 21*, said projection being provided with ahol'e '12 adap'tedto receive a pin, with a driving fit, the ends of which serve as the driv mg trunnion. "As this "is'commou to ring type'constructlon 'no' further description. is

thought "to be necessary, :"as the invention'flies so'lelv in the"features-embodied infithecon- Heating ring. 1 a

cular'hbl'low parts. They may-beheld to): gether by means of bolts .33 as-shoWn in Fi ure 3 or they maybe hel'd together/by a ring 34 completely surrounding the two semicircular parts as shownim i and 7. I 7 In between the semicircular pieces I pro-t videspa'ers 40, having a central hole 41 considerably larger than thevdowfel holes" 34 in thesemicircular"piecesl The dowel" holes '34: are provided to accommodate th hollow dowels 55. The object ofcthe 'hollow dowels is to provide a means foraligning the sem'rclrcu lar pieces wand Fto provide a means to' allow the Iub'ricant'tOpaSS from one "hollow-piece to anothn? Surrounding the hollow dowels 55--1 =-provid a packing washer: '60 which is thicker than the spacer 40 and is compressed during Fassembly y as,-

suring astight joint which prevents; loss of lubricant-from'the semicircular-pieces}. I

For the purpose. of 'machining and for convenience in' assembly *Lprofiide .twoi'opensemicircular pieces it may not be necessary to provide these plugs 38. I

In assembling my device four bushings 30 are driven into-place in the seats 31 provided for. the purpose in two ofthesemicircular pieces. Two semicircular pieces are then placed together in position with the fixed trunnions of the driven member in opposing bushings, care being had that the bushings not opposite the holes 37 are used. The object of these holes 37 is to provide a means for inserting a pin forming the trunnions for the driving member. The halves are then drawn together by the bolts 33 or they may be otherwise compressed and the ring 34 driven over the periphery of the semi-circular pieces. If the outer ring 34 is provided without a hole correspondmg to hole 37 for the insertion of the loose .pin, the pin must be inserted before the compression ring is put in place.

The journal pin of the driving member is then put through the opening 37 and driven through the opening 11 until it is in its proper position forming the journals of the driving member.

It will be observed that the driving ring is in two semicircular parts, and each part comprises a journal bearing for both the driving and driven members, none of the 1 journals being located in the split part of the torque ring, that when assembled the lubricant containing chambers are connected so that the lubricant can flow around during theoperation of the joint and freely feed the journal bearings.

I wish it distinctly understood that my universal. joint herein described and illustrated is in the form in which I desire to A, construct it. but that changes or variations may bemade as may be convement or desirablewithout departing from the salient features of my invention and I, therefore, intend the following claimsto cover such modifications as naturally fall within the lines of invention.

I claim: v

1. In a universal joint. the combination, with a driving and a driven-member and trunnions carried thereby, of a hollow lubrixcant containing connecting ring for said trunnions, the said ring comprising two complemental parts adapted to be secured together each part containing a complete bearing for one of the trunnions of both the driven and driving member.

, 2. In a universal joint, the combination,

ing adapted to receive one of the trunnions of the driven member. v V

3. The device of claim 1 inwhich the two complemental parts are held in alignment by hollow dowels through which the lubri;

cant chambers are connected with each other.

4. The device of claim 2 including means for connecting the semi-circular lubricant chambers together. 7 5. The device of claim 2 including spacers interposed; between the ends of the semicircular members provided -with-recesses containing compressible packing.

6. In a universal joint, the combination.

with a driving and a driven member and trunnions carried thereby, of a hollow lubricant-containing ring for said trunnions, the saidring comprising two semi-circular parts each part containing two complete bearings,

one for one of the trunnions of the driving member, and the other for one of the ,trunnions of the driven member; a clamping ring surrounding the semi-circular parts to hold the parts rigidly assembled.v

7. A universal joint comprising a driving and a driven member'each having trunnions. a connecting ring comprising two parts of semi-circular sections, each ofsald sections containing complete bearings for one of the trunnions carried by both the driving and driven members. 1 .7 y In testimony whereof I aflix my slgnature. I

EMIL GRUENFELDT. 

